BioMed Research International

Research Article

Molecular Screening of Virulence Genes in Extraintestinal Pathogenic Escherichia coli Isolated from Human Blood Culture in Brazil

Table 3

Study of pathogenicity islands, phylogenetic classification, and virulence genes in 20 ExPEC strains from human hemocultures.
StrainsPCPathogenicity islandsVirulence genes
IV536ICFT073IICFT073IJ96kpsIIK1fyuApapCpapGsfaAIbe10hly cnf1cnf2traTiutAiroNompThlyFiss
1 B2+++−+−−+++−+−−−++−−−
2B2+++−++−−−−−−−−−++−−−
3B2++−−++−−−−−−−−−+−−−−
4B2−−−+++−−−−+−−−−+−−−−
5A−−−−−−−−−−−−−−+−++++
6A−−−−−−−++−−−−−+++−−−
7B2++−−+−+++−−+−−+++−−−
8B2++−−−−−−−−−−−−−−−−−−
9B2++−−++++++−+−−−+−−−−
10B1+−−−−−+−−−−+−++−++++
11A+−−−−−+−−−−+−−+++−−−
12B1+−−−−−+−−−+−−−−−−−−−
13A−−−−+++++−−+−−++−−−−
14A−−−−++−++−−−−−+++−−−
15A−−−−−−−−−−−−−−−+−−−−
16B2−−−−−−−−−−−−−−−−+−−−
17D+−−−−−+−−−−−−−++−−−−
18B1+−−−−−+−−−−−−−+−−−−−
19D+−−−−−+−−−−−−−+++−−+
20B1−−+−−−−−−−−−−−−−++−+
PC: phylogenetic classification; pathogenicity islands: PAI IV536, PAI ICFT073, PAI IICFT073, and PAI IJ96; adhesions: papC, papG, sfaA, sfaS, and afa; invasion: ibe10; toxins: cnf2, cnf1, hlyA, hlyF, and cvaC; iron uptake systems: fyuA, iutA, and iroN; serum resistance: kps II, K1, traT, and iss; proteases: ompT.